Answer:
<h2>
<em><u>38</u></em></h2>
Step-by-step explanation:
She began with 38 books.
28 - 9 = 19
19(2) = 38
Hope this helps!
Answer:
0.02275
Step-by-step explanation:
We use this z score formula to solve for this question
z-score is is z = (x-μ)/σ/√n
where x is the raw score
μ is the population mean
σ is the population standard deviation
From the above question,
x = 77
μ = 75
σ = 7
number of samples = 49
Hence, the z score = 77 - 75/ (7/√49)
= 2/(7/7)
= 2/1
= 2
Hence, the z score = 2
Using the z table to find probability
P(x<77) = 0.97725
P(x>77) = 1 - P(x<77)
= 1 - 0.97725
= 0.02275
Therefore, the probability that the same mean will be larger than 77 years
is 0.02275
Answer:
This is a paralleogram because it machtes the defintion ofa four-sided plane rectilinear figure with opposite sides parallel.
Step-by-step explanation:
Answer:
1/2
Step-by-step explanation:
I believe its 4 we haven't really went over it
